1 中国科学院大学， 北京 100049
2 中国科学院上海光学精密机械研究所强激光材料重点实验室， 上海 201800
3 中国科学技术大学近代物理系核探测与核电子学国家重点实验室, 合肥 230026
对金属介质多层膜样品进行不同温度的退火处理。实验发现，当退火温度为350 ℃时，在样品Au层与SiO2层的界面处出现过渡层,样品具有很强的抗化学清洗能力。利用透射电子显微镜观测与能谱仪分析发现，过渡层的出现主要是Cr原子从Au层底部扩散到SiO2层的结果。过渡层可以增强Au层与SiO2层间的粘附力，阻挡酸溶液的渗入，使得金属介质多层膜的抗化学清洗能力得到增强。
材料 界面扩散 化学清洗 退火 粘附力 中国激光
2016, 43(10): 1003002
Author Affiliations
Abstract
Emission enhancement at 2.7 mm is observed in Er3+/Pr3+-codoped germanate glasses when pumped by a 980-nm laser diode. Significant reductions in 1.5-mm emission and upconversion intensity indicate efficient energy transfer between Er3+ and Pr3+; the energy transfer efficiency is as high as 77.4%. The mechanisms of energy transfer are discussed in detail. The calculated emission cross-section of Er3+/Pr3+-codoped germanate glass is 8.44×10-21 cm2, which suggests that Er3+/Pr3+-codoped germanate glass can be used to achieve efficient 2.7-mm emission.
160.2290 Fiber materials 160.5690 Rare-earth-doped materials 300.2140 Emission Chinese Optics Letters
2013, 11(12): 121601
